//: C08:Castaway.cpp
// From Thinking in C++, 2nd Edition
// Available at http://www.BruceEckel.com
// (c) Bruce Eckel 1999
// Copyright notice in Copyright.txt
// "Casting away" constness

class Y
{
    int i;
public:
    Y();
    void f() const;
};

Y:: Y()
{
    i = 0;
}

void Y::f() const
{
//!    i++; // Error -- const member function
    ((Y*)this)->i++; // OK: cast away const-ness
}

int main()
{
    const Y yy;
    yy.f(); // Actually changes it!
} ///:~
